Home / 15,453.30-21,324.98-8,379.57

Finding the Fourth Proportional to 15,453.30, 21,324.98 and 8,379.57

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Solution

The fourth proportional to 15,453.30, 21,324.98 and 8,379.57 is: 11,563.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,453.30 : 21,324.98 = 8,379.57 : x
  2. Step 2: Convert to fraction form
    15,453.30/21,324.98 = 8,379.57/x
  3. Step 3: Cross multiply
    15,453.30x = 21,324.98 × 8,379.57
  4. Step 4: Simplify right side
    15,453.30x = 178,694,263.58
  5. Step 5: Solve for x
    x = 178,694,263.58/15,453.30
  6. Step 6: Final answer
    x = 11,563.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.